Palladium-Catalyzed Highly Regioselective Aromatic Substitution of Benzylic Ammonium Salts with Amines
作者:Ya-Nan Xu、Meng-Zeng Zhu、Yu-Kun Lin、Shi-Kai Tian
DOI:10.1021/acs.orglett.9b02820
日期:2019.9.6
An unprecedented aromatic substitution reaction of benzylic ammonium salts has been developed through palladium-catalyzed C-N bond cleavage. A range of primary and secondary amines participated in a palladium-catalyzed aromatic substitution reaction of benzylic ammonium salts, delivering sterically hindered aromatic amines in moderate to excellent yields with extremely high regioselectivity. Preliminary
通过钯催化的CN键裂解,已经开发出前所未有的苄基铵盐的芳族取代反应。一系列伯胺和仲胺参与了钯催化的苄基铵盐的芳族取代反应,以中等至极好的收率提供了位阻芳族胺,且具有极高的区域选择性。初步的机理研究成功地鉴定出π-苄基钯配合物和γ-乙烯基烯丙基胺为关键中间体。该研究为在芳族取代反应中使用苄基铵盐铺平了道路。